diff --git a/cpp/preprocess.sh b/cpp/preprocess.sh
new file mode 100755
index 00000000..69d3b966
--- /dev/null
+++ b/cpp/preprocess.sh
@@ -0,0 +1,11 @@
+#!/bin/sh
+
+function preprocess() {
+	erb $1.erb > $1.tmp
+	mv $1.tmp $1
+}
+
+preprocess msgpack/type/tuple.hpp
+preprocess msgpack/type/define.hpp
+preprocess msgpack/zone.hpp
+